56776616 has 16 divisors (see below), whose sum is σ = 114645300. Its totient is φ = 26204544.

The previous prime is 56776613. The next prime is 56776619. The reversal of 56776616 is 61667765.

56776616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56776613) and next prime (56776619).

It can be written as a sum of positive squares in 2 ways, for example, as 51696100 + 5080516 = 7190^2 + 2254^2 .

It is a super-2 number, since 2×56776616² = 6447168248822912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (56776613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272861 + ... + 273068.

Almost surely, 2^56776616 is an apocalyptic number.

It is an amenable number.

56776616 is an abundant number, since it is smaller than the sum of its proper divisors (57868684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56776616 is a wasteful number, since it uses less digits than its factorization.

56776616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545948 (or 545944 counting only the distinct ones).

The product of its digits is 317520, while the sum is 44.

The square root of 56776616 is about 7535.0259455426. The cubic root of 56776616 is about 384.3467101571.

The spelling of 56776616 in words is "fifty-six million, seven hundred seventy-six thousand, six hundred sixteen".